Home / 396,475.79-546,382.38-389,189.03

Finding the Fourth Proportional to 396,475.79, 546,382.38 and 389,189.03

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Solution

The fourth proportional to 396,475.79, 546,382.38 and 389,189.03 is: 536,340.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,475.79 : 546,382.38 = 389,189.03 : x
  2. Step 2: Convert to fraction form
    396,475.79/546,382.38 = 389,189.03/x
  3. Step 3: Cross multiply
    396,475.79x = 546,382.38 × 389,189.03
  4. Step 4: Simplify right side
    396,475.79x = 212,646,023,803.43
  5. Step 5: Solve for x
    x = 212,646,023,803.43/396,475.79
  6. Step 6: Final answer
    x = 536,340.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.